A model for predicting vertical component peak ground acceleration (PGA), peak ground velocity (PGV), and 5% damped pseudospectral acceleration (PSA) for Europe and the Middle East

• Published in: Bulletin of earthquake engineering Vol. 15; no. 7; pp. 2617 - 2643
• Main Authors: Çağnan, Zehra, Akkar, Sinan, Kale, Özkan, Sandıkkaya, Abdullah
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.07.2017; Springer Nature B.V
• Subjects: Acceleration; Civil Engineering; Data processing; Earth and Environmental Science; Earth Sciences; Earthquakes; Environmental Engineering/Biotechnology; Formulations; Geological faults; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Ground motion; Hydrogeology; Mathematical models; Original Research Paper; Regression analysis; Response spectra; Seismic engineering; Shear; Slip; Standard deviation; Structural Geology; Velocity; Vertical motion; Middle East; Europe; Uniform hazard spectrum; Pan-European strong-motion database; Vertical response spectrum; Conditional mean spectrum; Ground-motion prediction equations; Error propagation
• ISSN: 1570-761X; 1573-1456
• DOI: 10.1007/s10518-016-0063-9

In this study, we present a ground-motion model for the vertical component of peak ground acceleration, peak ground velocity, and 5% damped pseudo acceleration response spectra at periods ranging from 0.01 to 4 s. The vertical model is based on the ground-motion models previously developed for the horizontal component and vertical-to-horizontal ratio of ground motion by Akkar et al. (Bull Earthq Eng 12:359–387, 2014a ; 517–547, 2014b ) rather than on an independent regression analysis of strong-motion data available for Europe and the Middle East. The proposed ground-motion model includes formulations for the median values as well as for the aleatory within-event, between-event, and total standard deviation values of the vertical ground motion. We validate the proposed model by comparing it against the strong-motion database of Europe and the Middle East. Our vertical ground-motion model is applicable for moment magnitudes ranging from 4.0 to 8.0, for source-to-site distances ranging from 0 to 200 km, average shear-velocity down to 30 m (V s30 ) values ranging from 150 to 1200 m/s and for reverse, normal and strike-slip styles of faulting as is the case for the underlying horizontal component and vertical-to-horizontal ratio ground-motion models of Akkar et al. ( 2014a , b ). Within the scope of this study, a method to develop a vertical spectrum that is fully consistent with the corresponding horizontal uniform hazard spectrum is also proposed.